Telegraphic transmitting-key.



No. 824,031. PATBNTEDJUNE 19, 1906. I. KITSEE. TBLEGRAPHIC TRANSMITTINGKEY.

APmmATxoi FILED rs.11.1905.

2 SHEETS-SHEET 1.

arm Wot No. 824,631,. PATENTED JUNE 19, 1906.

I. KITS-EB.

TELEGRAPHIC TRANSMITTING KEY.

APPl-IGATIOK FILED FEB. 11. 1995.

2 SHEETS-SHEET 2.

twi -mea J as (3 H u e n [*oz 5 d r ITED STATEES PATENT OFFICE.

ISIDOR KITSEE, or

PlilLA DELPHIA, PENNSYLVANIA HALF r0 WILLIAM J. LATA, ()F PHILADELPHIA,PENNSYLVANIA.

TELEGRAPH; TRANSMiTTING-KEY.

Patented June 19, 1906.

Application llied February 11, 1905. Serial No 245.221.

To all whom it may concern;

Be it known that. I, Iswon Knees, of the city and count r of Philadelhis and State of Pennsylvania, eve invented cert-sin new and useful 1mrcvcments in Telegraphic Trams mitting eys, (Close No. 236,) of whichthe following is s. specification.

My invention relates to on improvement in telegraphic tnansmitting-keys,and has for its object to produce a key whereby current-reversals mayreadily be transmitted. Referring to the drawings, Figure 1 is a planView of the d evicc embodying m invention with the electricalconnections s men in diagram. Fig. 2 is a side elevation of the same.Fig. 3 is a. plan View oi my invention in e modified form.

A is the key lever or tongue secured to the stationary part (1 with theinterposition of the spring A in a manner so as to he movablehorizontally. This lever is provided with the contacts a and (1respectively, both of these contacts being in electrical connection witheach other end the lever.

B and B are two springs escorted and held in position by the twobinding-posts E: and a, respectively, these springs being non mall y incontact with the two contest-s C and C, respectively.

D and D are two adj usteble contacts. 7

The spring B is )rovided wit h the contact a, and the spring l3 with thecontent c.

The lever A is connected to the line of transmission F eitlier directlor with the interposition of the necessary devices. This leverA.

occupies a. central position, as is illustrated in Figs. 1 and 3.

The binding-posts I) and D are each con nested with source of current,here shown as the, batteries 1 2, the binding-post 1) con nected throughwire E with the of battery 1, the )ositive pole of whic is grounded atZ, the winding-post. l) connected through wire E with the positive poleof the bette 2, the nega tive pole of which is groun ed at Z. Thecontact C is connected with wire G, grounded at Z. T he contact C isthrough wire H electrically connected with the spring 13, and the springB is electrically connected with the lever A.

N ormslly-that is, when the ke is not in use-the lever A occupies a.centr position,

negative ole through this ground, and I as sta. Led above, and is onlyconnected with the transmitting line F and through the spring B, contact0, wire H, spring B, contact 0, wire G to the round '25. The contacts I)and D are normal y out of connection with any part of the key, exceptingthe batteries 1 and 2, respectively.

This kcyis more specially designed to transmit impulses of oppositedlrection or in other words, to transmit true reversals, as is outlinedin Letters Patent No. 777,259, granted to me under date of December 13,1904, for a system of telegrsphy, wherein true reversals are used, ctransmitted impulse of one polarity sways being followed by an impulseof oppositc polarity. In some cases-es, for instance, in submarinetelegraph it is of great edventsge that soon as an impulse is sent overthe cable the terminal of the same should be wounded at once. The reasonfor this is wel understood by persons versed in the art, and it sufficesto say here that the dis charging of the condensers connected to theceble, as well as the cable itself, is facilitated eve provided in thistransmitting-key the automatic grounding through the intermediatecontacts C and C and the springs B and B.

The operation of this key is as follows: The operstor in transmittingire nlses over the line moves the key-lever to t 1e right or left, asthe case may be. It. is supposed that he first wishes to transmit apositive impulse. He therefore in accordance with the arrangement asillustrated in Fig. 1 has to move the lever to the left, and in thecourse of this movementthe contact a on the lever A connects with thecontact a on the spring B and. pushes this contact away from the contactO and in connection with the contest 3. As soon as through the movementof this lever the connection of B end'(] is broken the ground connectionof the line is and when in its further movement the point a connectsthrough the'point a with the contact D the connection of the use withthe battery 2 is made, and an electrical impulse flows in the directionof the arrow from buttery 2, through wire E, point- D, a, a", A, A", .1.and (as the line of transmission is green ed on the other terminal) heckto the ground Z. As soon as the operator releases ASSlGNOR OF ONE- alsobroken,

the lever A the same will assume its central or normal position, and thepressure on the spring B being removed the same will break itsconnection with the contact V and will connect with the contact C,thereby efl'ectually grounding the line of transmission ii. The movementof the lever A to the right has the same efl'ect as the movement of thelever to the left, with the exception that now an impulse flows over theline of a polarity oposite to the polarity of the former impulse.

e lever in moving toward the right first connects its point a with thepoint a of the spring B, moves this spring B out of contact with thepoint (),and moves the point a) toward and in contact with the point 1).Through the breaking of the cont in. between C and spri w B the roundconnectt n of the line F is bro en, an through the contact of a and aand D the connection of the line F with the battery 1 is established,which connection allows a current to flow from the posi- F tive poletoward the ground Z, and (as the line of transmission is dgrounded onthe other terminal) through sai line, lever A, contact a, contact "9, D,wire E, back to the battery 1. The releasing of the lever A. will againbreak the connection between it and the con tacts c andD, whereby theflow of the battery will cease, and the spring B released of itspressure will'a ain contact with 0, thereby again elfectual y groundingthe line F.

In 3 I ave omitted the automatic grounding device, and this key is bestadapted for such lines where the capacity is not at enough tonecessitate the grounding of 0th terminals after each transmitted1mpulse. In this figure similar letters indicate similar parts.

The movement of the lever A to the right sends a negative impulse overthe line and the movement of the lever to the left sends a positiveimpulse over the line. In its normal position-that is, when not inusethe lever does not connect with any of the batteries.

I have illustrated in Figs. 1 and 3 the source of electric current as toconsist of two batteries each grounded; but it is obvious thatinstead oftwo batteries one large batter may be used grounded in the center or midle, which in realityis the equivalent of a battery split in two.

Having now d ascribed my in vcntion, what I claim as new, and desire tosecure by Lettors Patent, m

1. in combination with a line ol trans1nission, a trans:cutting-keymubracing a main. lever connected to said line, a contact --lcver oncar-l1 side of said main. lever connected each through stationarycoi'itacts with the ground, stationary contacts connected to sources ofcurrent and means whereby through the moven'icnt ol the main lever, theline counmztml to one or the other of said sources.

2 A trausniitting-key embracing a support, a main lever, means toconnect said main lever to an outside circuit, said main lever providedwith contactim points on each side, a CUIllltUlJ-lCVQl" on one 1 side ofsaid. main lever, a stationary contact for each of said contact-lewrs,one of said stationary contacts connected with one of saidcontactlevcrs, the second ol said stationary contacts provided withmeans to connect the same to an outside circuit, the second of saidcontactlevers connmgtcd to the main lever, a bindi post on each side ofsaid movable l vers, erib h ol said binding-posts provided with means toconnect the same to an outside circuit.

3. 1n con'ibination with a line of transmis' sion, a transmittingkcyprov ided with means to connect said line, when in normal position, tothe ground and provided with means to break said "IOllllil and connectsaid line with one pole oi a source of current if moved to the right andwith an opposite ole of a source of current if moved to the le t.

4. A telegraphic transmitting-key provided with a movable lever,stationary contacts, and movable conductors interposed between saidlever and said contacts, said movable conductors normally in electricalcontact with. each other, and with the movable lever, and adapted to bebrought out of con tact with each other through the movement of saidlevdr.

In testimony" whereof I hereby sign my name, infthe presence of twosubscribing witnesses,this 9th day of February, A. D. 1905.

ISIDOR KITSEE. Witnesses E rrn R. STLLLEY, I C. Yn'rrnn.

